SI4115G-BM PLL Clock Synthesizer | Silicon Labs
MPN： SI4115G-BM ✗ 停產SI4115G-BM 概覽
A phase-locked loop, or PLL, is a frequency-control circuit in which an internal oscillator is phase and frequency aligned to a reference input. In clock-generator and frequency-synthesizer ICs, this architecture supports clock distribution, frequency multiplication or division, and generation of timing signals required by communications and digital systems. The SI4115G-BM belongs to the broader Clock & Timing > Clock Generators, PLL, and Frequency Synthesizers category.
The verified distributor and manufacturer listings identify SI4115G-BM as a clock and timing IC associated with frequency synthesis and legacy wireless applications. The listing snippets specifically reference GSM/GPRS synthesis and external synthesis, providing application context without supplying enough verified electrical data to specify operating conditions. Users should obtain the original manufacturer datasheet before making a board-level substitution or timing-design decision.
Typical design uses for this product family include RF and baseband clock generation, wireless transceiver timing, communications infrastructure, and embedded systems requiring a stable synthesized clock. However, exact suitability depends on required reference frequency, output frequency, channel spacing, loop bandwidth, supply voltage, jitter, and package-level pin compatibility. Those values must be confirmed from the manufacturer documentation.
A legacy replacement should not be treated as drop-in solely because another PLL has a similar function. The verified search results mention Si4126-F-GM as a recommended replacement, but they do not establish that it shares the MLP-28 footprint, pinout, frequency range, or electrical parameters with SI4115G-BM. PCB migration therefore requires formal comparison of package drawings, pin names, supply rails, and timing specifications.
This page combines the available verified distributor listings, package information, lifecycle concerns, and replacement guidance with explicit uncertainty markers. It is intended to support component identification and sourcing research rather than substitute for the original manufacturer datasheet or a complete engineering cross-reference.
直接替換替代品，適用於 SI4115G-BM — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
SI4115G-BM
✅ 直接替換聯絡詢價
查看資料表 →Si4126-F-GM
✅ 直接替換📋 參考替代品（不在目錄中）
SI4115G-BM 規格
| Product Type | Frequency synthesizer |
| Device Category | Clock generator, PLL, and frequency synthesizer |
| Application Context | GSM/GPRS synthesis and external synthesis |
| 封裝 | MLP-28 |
| 腳位數 | 28 pins |
| PLL Architecture | Phase-locked loop frequency synthesis |
| 生命週期狀態 | Legacy component; not suitable for new designs |
SI4115G-BM mlp-28 腳位配置指南
SI4115G-BM（mlp-28 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： SI4115G-BM.
請參閱 資料表 以查看完整腳位配置。
典型應用
SI4115G-BM 適用於 6 應用s: GSM Wireless Clock Generation, RF and Baseband Timing, Legacy Communications Equipment Repair, External Frequency Synthesis, Wireless Test and Measurement Equipment, Industrial Embedded Timing Reference.
GSM Wireless Clock Generation
The SI4115G-BM is associated by the verified FindIC listing with GSM/GPRS synthesis, making it a legacy clock-generation option for maintaining wireless equipment designed around its original frequency plan. In such a system, the synthesizer role would be to derive the required timing or carrier-related frequency from a reference source. The supplied data does not verify the input frequency range, output range, channel spacing, supply voltage, or output topology, so those values must be obtained from the original manufacturer datasheet before confirming use in a specific GSM design.
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RF and Baseband Timing
A PLL-based frequency synthesizer can support RF and baseband systems that require stable, programmable timing references, although the exact suitability of SI4115G-BM depends on unverified electrical specifications. The part is classified as a clock generator, PLL, and frequency synthesizer, so it belongs in the clock-and-timing hierarchy used by communications equipment. Any implementation must verify reference frequency, synthesized output range, loop stability, jitter, supply voltage, and grounding before the legacy device is placed in a new or modified board.
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Legacy Communications Equipment Repair
SI4115G-BM is most defensible as a maintenance component for an existing communications PCB whose original design has already been validated with this device. The verified Veswin result calls it a legacy PLL and recommends Si4126-F-GM as a replacement candidate, which highlights the need to compare the original and replacement documentation carefully. Repair teams should preserve the original reference network, loop filter, decoupling, and package footprint, then verify timing and RF behavior before committing a sourced part to production or field use.
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External Frequency Synthesis
The verified product description explicitly associates SI4115G-BM with external synthesis, indicating a role in producing a controlled frequency from an external reference or clock source. This can be useful in legacy RF and communications equipment where the board already contains the required loop-filter and output network. Because the supplied material does not identify the reference input, output frequency range, divider configuration, or output impedance, engineers must confirm those values against the manufacturer documentation before treating the part as a general-purpose external synthesizer.
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Wireless Test and Measurement Equipment
Legacy wireless test equipment may use a dedicated PLL synthesizer to generate repeatable clock or RF-related frequencies for measurement and calibration functions. SI4115G-BM could fit only when its original reference, output range, supply, and pin configuration match the existing equipment. The verified data does not establish output amplitude, phase noise, jitter, settling time, or temperature performance, so an instrumentation engineer should not select it solely from the broad frequency-synthesizer category. A full manufacturer datasheet comparison is mandatory.
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Industrial Embedded Timing Reference
A PLL-based clock synthesizer can be considered for an embedded timing subsystem that requires a stable programmable frequency derived from a reference clock. SI4115G-BM is not recommended as an unqualified new-design choice because its verified lifecycle information describes it as legacy and unsuitable for new designs. A redesign should instead compare current supported devices, and any legacy reuse must preserve the original loop filter and output network and be validated for temperature, supply tolerance, phase noise, and startup behavior.
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推薦產品摘要
工程參考資料，適用於 SI4115G-BM — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | Si4126-F-GM |
|---|---|---|
| Brand | Silicon Labs | Silicon Labs |
| Replacement Status | Target legacy PLL | Recommended replacement candidate in verified Veswin result |
主要差異化特點
- Verified legacy identity (對比Si4126-F-GM)
- Application context (對比Si4126-F-GM)
- Replacement evidence (對比Si4126-F-GM)
設計說明
Do not treat the Veswin recommendation of Si4126-F-GM as proof of drop-in compatibility. Before any replacement, compare the MLP-28 package drawing, exposed-pad arrangement, pin names, reference input, supply rails, output stages, and loop-filter requirements. The supplied data does not provide the SI4115G-BM pinout or the Si4126-F-GM package details, so a schematic-level and package-level review is mandatory.
Preserve the original power-supply routing and decoupling arrangement when replacing SI4115G-BM. The verified snippets do not specify the operating voltage, current consumption, or supply tolerances, so those values must come from the manufacturer datasheet. Check that the candidate device supports the same rail, startup behavior, ground reference, and output bias conditions; do not infer these requirements from the generic PLL category.
A PLL synthesizer depends on the reference path, loop filter, output network, and controlled grounding. Validate the reference amplitude, output termination, filtering, startup settling, phase noise, and jitter against the original system requirements. The supplied data does not provide those timing or signal-integrity values, so bench comparison and datasheet verification are required before field deployment.
合規資訊
The supplied verified data does not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. Compliance fields are therefore unknown rather than inferred.
